Cinematographic view-taking camera of the portable automatic type



1 SheetS-Sheet 1 1.1 1 llllllllll J. MRY

Filed Dlec. 4. 1928 w fly.

I I /[II IIIIIk/I I II II/ IIIIII I IIIfIIIII I I I I I I I I I I I I II I I I I I I I I KI r I I I I I I I I I I I II ..\\.`..|.I// 1 v Feb.10, 1931.

CINEMATOGHAPHIC VIEW TAKING CAMERA OF THE PORTABLE AUTOMATIC TYPE II III I IIIIIVIIIII II III J. MRY

Feb. 10, 1931.

CINMTOGRAPHIC VIEW TAKING CAMERA OF THE PORTABLE AUTOMATIC TYPE FiledDec. 4, 1928 4 Shee'S-Sheet 2 Feb., 10, 1931. L MRY i 'l`,792,436CINEMATOGRAPHIC VIEW TAKING CAMERA OF THE PORTABLE AUTOMATIC TPE FiledDec. 4, 1928 4 sneets-sheet a Feb. 10, 1931. J. MRY

GINEMAToGRAPmc vIEw TAKING CAMERA of? THE PORTABLE AUTOMATIC TYPE FiledDc. 4. 1928 4 Sheets-;Sheet 4 Patentedl Feb. 10, 1931 UNITED sTATEs"4PYI'EN'I' OFFICE'` JEAN mam, or EPINAY, FRANCE ments in such apparatusby which I obtainV a large opening for the shutter and eliminatc theresistances due to the film boxes, also properly fastening the saidboxes or the door of the camera, and can rapidly wind up the springs,and may also carry out the focusing by the refiection of the imageformed by the lens The accompanying drawings show by way of example aconstructional form of the ap- 7-'5 paratus in which the saidimprovements are embodied.

fig. 1 is a side view of the apparatus, with the door and an innerpartition removed.

ll'ig.. 2 is a front view with parts broken away showing the control ofthe shutter and the device for the intermittent film drive.

3 is a side view with parts broken away showing an open film box, alsothe device for the automatic opening of the apertures of said box, andthe travel o'f the film.

Fig. 4 is a plan view partly in section on the line lV-IV of Fig. 3, inwhich the part which is not in section shows the interior of theapparatus, the top of the box being re- 30 inoved..

Fig.. 5 is an end view of the lens and its support. w

llig. *5 is a diagrammtic v1ew showing the operation of thespring-winding device.

llig. 7 relates to a modification of the focus-.

- ing glass.

5 A gear wheel 6 The apparatus comprises two toothed barrels 1 and 2(Figs. 1, 4 and 6) each of which contains a spiral spring la-a (Fig. 6)said barrels engaging a pinion 3 whose shaft is bored for the insertionof a winding handle. rElle gear wheel 4 cooperating with said pinion 3engages a pinion 5 whose shaft 1s bored for the insertion of anOperating handle. V is secured to the pinion 5 and is in geareng'agement with a .pinion 7 secured to a'worm 8 engagi'ng nworm wheel9v mounted on the shaft 10 which enters a square box 11 containing theshutter (Figs. 1, 2 and 4). On the end of said shaft 10 is Applicationflled December 4, 1928, Serial .'R'o. 323,751, and in France December16, 1927.

a gear wheel 12 provided with a disk 13. The Wheel 12 drives a wheel oflike diameter 12a to whose shaft is riveted the shutter 14a.

On the disk 13 is mounted a crank pin 14 actuating a slotted lever 15comprising a small arm 16. Under the action of the pin 14 rota-ting atuniform speed, the lever 15 describes a movement of oscillation about.its axis and imparts this to a link 17 pivoted `to the arm 16 andactuating a slide having two guiding collars 18-19. rl`he said slide isadapted to slide by means of said collars upon Vertical rods 20 placedin line, and it carr1es a spring pawl 21, slidablel in a slot 22 andadapted to draw down the film. rhe pawl slides over the perforations ofthe film when it rises.

To maintain the direotion of the frame in the plane of the image, it isprovided with an arm carrying a fork 23 slidable on a fixed rod 24,parallel to the rods 20. rlhe speed of the alternate motion imparted bysaid lever 15 will increase when the Crank pin comes near the pivotingpoint of the lever, and will decrease when the crank pin recedes fromthis pivoting point. rhe position of the parts is regulated so that thehigh speed will correspond to the descent of the hlm, and this descenttakes place during 1/4 revolution of the disk 13, so that the period ofopening of the shutter 14a can be made to last for lz revolution ormore.

rl`he film box 57 (Figs. 3 and 4) feeds and also receives the film, anddue to its Shape, it has a great rigidity.

The said box is shown in Fig. 3 without its cover 57a. ln the interiorwill be observed the cores 25-25a. Upon` the core 25 is wound the film58 whose outer end issues through an aperture 26 and engages the feedingdrum 27, then forming a loop and passing through the gate 59, thenmaking a second loop when issuing from the gate. It engages theactuating drum 28 and returns to the holder through the aperture 29, andis Wound upon the core 25a.

It is observed in the drawing that the apertures are of ample size andthe film can freely pass through, so that it will not be scratched orstretched, and there is no loss of the power of the driving sprin s.Each a be closed by a curve interior of the box and faced with Velvet onthe side next the aperture. The cover is secured to an external slide 31carrying two projections 31a forming between them a notch 32. At the topof the outer box 60 is disposed and guided by two screws 33-34 aslidable plate or latch provided with a rack and cooperating with apinion 36 which is actuat-ed by a control knob 37. The said plate formsaihook 38 which holds the side cover or door 41 of the box 60 byengaging a corresponding hook 40 mounted on the door on the edgeopposite the hinges 41a secured to the lower part of the apparatus. Theplate 35 also comprises a stud 39 engaging the notch 32.

When the pinion 36 is turned to the right (Fig. 4) the stud 39 drivesthe slide 31 to the left, and the door 30 closes the aperture 26. At thesame time the hook 38 releases the hook 40, so thatthe door 41 can beopened.

erture may vWhen the said pinion 36 is turned to the left,

the aperture is opened and the door is held shut. Analogous parts areprovided for the aperture 29 and they serve a like purpose. These areControlled by a pinion 43 secured to the pinion 36 by a shaft 42. ASafety device is provided to prevent accidental opening of saidapertures during the separate transportation of theholder 5.7. The saiddevice consists of a flexible steel strip 44 secured to the back of thedoor 30, and the end of said strip makes contact with a stud 45 mountedon the holder 57 when the said aperture is closed, yso that the door 30cannot be opened.

When the holder 57 is placed in the apparatus, a ramp 46 on the box 60drives out a piston 47 mounted on the box 57, and said piston thuspushes the strip 44 inwardly and releases it from the stud 45, so thatthe doorv can be moved to uncover the aperture.

In an apparatus of this class, the driving Springs 1a-2a must be woundup twice in order to circulate` thelwhole length of the film containedin the holder, so that it is an important feature to be able to wind theSprings rapidly and easily. This result is obtained by the use of acable or chain 48 (F ig. 6), and the cable is wound for instance sixtimes about a small barrel 49 containing a spiral spring 50, land it isthen wound three imes around the barrel 2. lWhen the operator draws thesaid cable in the direction of the arrow, the cable turns the barrel byadhesion, and winds up the s ring 150 -of the barrel 49 to which the endothe cable is at- 'tached When the cable is allowed to return under theaction of the spring-50, the said cable will then slide on the barrel 2.The pinion 3 is provided with .a ratchet device 57 to preventall backmotieno-f the barrel 2 when cover 30 shdable in the' -against the cheekWill be front wall .of the `be placed about his neck, and the o ratorwhi e holding the camera in the han s, need onl extend the arms by. anabrupt movement an then bring them back, in order to Wind up the device.

The camera is provided With an observing lens which aids in the focusingby allowing the image on the film/given by the camera lens to beexamined.

Referring to Figs. 3 and 4, it is observed that to the middle of thedoor 41 is secured a tube 73 containing a lens or magnifying glass 736and provided at the rear and with eye piece 73a and at the other endwith a socket 72 whereof one wall 74 carries a small mirror 75 servingto refiect to the said lens the image formed by the camera lens on thefilm, so that i ror, and when it is shut, these latter are closelyapplied against the box.

Fig. 7 relates to a modification of the said focusing device, and hereinthe operator may apply his right cheek to the door of the apparatus, thetube of said device being reduced to a chamber 76, the aforesaideye-piece having the oblique position so that it will fit upon theoperator,s eye-socket. He will thus see the reflected image in a lessoblique manner, as shown by the lines representing the reflected rays`(Figs. 4 and 7).

The said eyepiece, which is made of flexible rubber, will fit exactlyupon the eye socket, thus avoiding all danger of fogging by the entranceof light, and thus the operator may not onl focus the image but may alsofollow the m scene in all its movements. Also, due to the force of themuscles of the arm and neck,, the camera placed more firmly secured thanwhen it is simply held in ,the hands.

The said apparatus further comprises a very simple and practicalfocusingdevice, as shown in Figures 4 and 5.

.In the cinematographic apparatus in which the film is 'disposed in'astationary gate, the image-is focusedjby moving the lens back and .forthupon its optical axis. A tube 77 with .flange 7 8. ismounted -onthecamera, and saidltube .carries adj acent the flangea threaded part whichhas for i'nstance a rlght-handed thread. .A second tube.79 isslidable onthe-tube 77 and has a Ieft-handedthI'YeJdat the' end'adjac'ent thefirst-mentioned thread. A large milled socket or knob whose bore carriestwo o positely-disposed threads, connects t e threaded parts of thetubes 78 and 79, and when rotated it moves the tube 79 in eitherdirection, said tube being closed at the outer end by a screw plug 81.To the middle of the tube 79 is secured a rigid arm or support i 81a ofwhich an elevational view is shown in Fig. 5. The said arm surrounds alens tube 82 which is secured thereto, and both are split at 83 so thatthe lens 85 may be held by means of the screw knob 84.

When the operator places the camera against his right eye, pressing ittightly against the cheek, the camera can be then focus-ed by turningthe milled knob 80 with one inger of the right hand.

A tube device 86 is secured to the front wall, and it sei'ves to guidethe lens tube which slides by easy friction parallel tb the tube support77.

l claim:

In a view-taking cincmatographic appai'atus, the combination of a rotarydisk shutter, a gear wheel operatively connected to said disk in suchmanner as to rotate at the same speed, a crank 1pin mounted on the saidWheel, a pivoting s otted lever, the slot of said lever being engagedwith said crank pin, Vertical guides, a slide movable in said guides, adriving pawl cooperating with one of the perforated edges of the film,said pawl being spring mounted on said slide, and a link connecting saidslide to said slotted lever, the pivot axis of said lever beingeccentric with reference to said wheel carrying the crank in. p Intestimony whereof I have hereunto affixed my signature.

JEAN MRY.

